如何确定触发keyup事件的表行？

I have a long table (10,000 rows, 10 columns) that can be edited on screen. After editing, the changes can be saved. Since I do not want to re-save the entire table I want to keep track of the rows where changes have been made. Each row-tag has a unique id as well as the table-tag. But using .keyup only functions with $('table') and not with $('tr') or $('td') and always returns the is of the table-tag. Here's a short example of my html-code:I have a long table (10,000 rows, 10 columns) t